Control-Loop-Based Impedance Enhancement of Grid-Tied Inverters for Harmonic Suppression: Principle and Implementation
To understand different control loops that have been proposed to improve the quality of current into grid from the perspective of output impedance, control-loop-based output impedance enhancement of grid-tied inverters for harmonic suppression is proposed in this paper. The principle and generalized...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-10-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/11/11/2874 |
| _version_ | 1828149795345137664 |
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| author | Fei Wang Lijun Zhang Hui Guo Xiayun Feng |
| author_facet | Fei Wang Lijun Zhang Hui Guo Xiayun Feng |
| author_sort | Fei Wang |
| collection | DOAJ |
| description | To understand different control loops that have been proposed to improve the quality of current into grid from the perspective of output impedance, control-loop-based output impedance enhancement of grid-tied inverters for harmonic suppression is proposed in this paper. The principle and generalized control loop deduction are presented for reshaping the output impedance. Taking a traditional LCL (Inductor-Capacitor-Inductor)-type inverter with dual-loop control as an example, different kinds of control loop topologies are derived step by step and further optimized for the implementation of the proposed principle. Consequently, the improved control consists of a filtering-capacitor voltage loop, and a grid current loop is found which can remove the existing inner capacitor current loop and therefore simplify the control. Finally, the effectiveness of the proposed control method is compared with the existing method and both are verified by simulations and experiments. |
| first_indexed | 2024-04-11T21:35:24Z |
| format | Article |
| id | doaj.art-0270e5ccefde4511a40ca902a16111f5 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T21:35:24Z |
| publishDate | 2018-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-0270e5ccefde4511a40ca902a16111f52022-12-22T04:01:46ZengMDPI AGEnergies1996-10732018-10-011111287410.3390/en11112874en11112874Control-Loop-Based Impedance Enhancement of Grid-Tied Inverters for Harmonic Suppression: Principle and ImplementationFei Wang0Lijun Zhang1Hui Guo2Xiayun Feng3College of Mechatronics Engineering and Automation, Shanghai University, Shanghai 200444, ChinaCollege of Mechatronics Engineering and Automation, Shanghai University, Shanghai 200444, ChinaCollege of Mechatronics Engineering and Automation, Shanghai University, Shanghai 200444, ChinaCollege of Mechatronics Engineering and Automation, Shanghai University, Shanghai 200444, ChinaTo understand different control loops that have been proposed to improve the quality of current into grid from the perspective of output impedance, control-loop-based output impedance enhancement of grid-tied inverters for harmonic suppression is proposed in this paper. The principle and generalized control loop deduction are presented for reshaping the output impedance. Taking a traditional LCL (Inductor-Capacitor-Inductor)-type inverter with dual-loop control as an example, different kinds of control loop topologies are derived step by step and further optimized for the implementation of the proposed principle. Consequently, the improved control consists of a filtering-capacitor voltage loop, and a grid current loop is found which can remove the existing inner capacitor current loop and therefore simplify the control. Finally, the effectiveness of the proposed control method is compared with the existing method and both are verified by simulations and experiments.https://www.mdpi.com/1996-1073/11/11/2874grid-tied inverterharmonic suppressionimpedance enhancementoutput impedance |
| spellingShingle | Fei Wang Lijun Zhang Hui Guo Xiayun Feng Control-Loop-Based Impedance Enhancement of Grid-Tied Inverters for Harmonic Suppression: Principle and Implementation Energies grid-tied inverter harmonic suppression impedance enhancement output impedance |
| title | Control-Loop-Based Impedance Enhancement of Grid-Tied Inverters for Harmonic Suppression: Principle and Implementation |
| title_full | Control-Loop-Based Impedance Enhancement of Grid-Tied Inverters for Harmonic Suppression: Principle and Implementation |
| title_fullStr | Control-Loop-Based Impedance Enhancement of Grid-Tied Inverters for Harmonic Suppression: Principle and Implementation |
| title_full_unstemmed | Control-Loop-Based Impedance Enhancement of Grid-Tied Inverters for Harmonic Suppression: Principle and Implementation |
| title_short | Control-Loop-Based Impedance Enhancement of Grid-Tied Inverters for Harmonic Suppression: Principle and Implementation |
| title_sort | control loop based impedance enhancement of grid tied inverters for harmonic suppression principle and implementation |
| topic | grid-tied inverter harmonic suppression impedance enhancement output impedance |
| url | https://www.mdpi.com/1996-1073/11/11/2874 |
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